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Zenair CH300 'Tri-Zenith'

Description
  Manufacturer:Zenair
  Base model:CH300
  Designation:CH300
  Nickname:Tri-Zenith
  Basic role:Homebuilt
  Crew:Pilot

Specifications
  Length: 22' 6" 6.8 m
  Height:6' 10" 2.0 m
  Wingspan: 26' 6" 8.0 m
  Wingarea: 130.0 sq ft 12.0 sq m
  Empty Weight: 1,140 lb 517 kg
  Gross Weight: 1,850 lb 839 kg

Propulsion
  No. of Engines: 1
  Powerplant: Lycoming O-360-AFZ
  Horsepower (each): 180

Performance
  Cruise Speed: 153 mph 246 km/h 132 kt
  Max Speed: 170 mph 273 km/h 147 kt
  Climb: 1,400 ft/min 426 m/min

Examples of this type may be found at
MuseumCityState
Canada Aviation Museum+ttawaOntario


 

Recent comments by our visitors
 Ken Pickering
 Winnipeg, MB
Just picked up a CH300 partially completed. It seems that almost all the airframe compnents have been purchased (atleast the "special" ones like cowl, canopy, etc).
Plan to start on completing it in the fall of 09.

Cheers!
01/30/2009 @ 09:37 [ref: 23583]
 Gord Brown
 Kingston, ON
I have a CH300 with a o-320 in it wit a generator installed I would like to change it out to a alternator has any one got any good sugestions as to what to install

10/28/2006 @ 17:05 [ref: 14603]
 Phil Gower
 toowoomba, OTH
Hi I have an unfinished Ch300 project which is taking a long time to even get started on. Good to hear positive reviews, It may be for me a retirement project!!!

Need some + ve feedback to get on track with it. have all the parts, need to start.
04/22/2005 @ 05:32 [ref: 10008]
 Tim the Builder
 , AB
Does Chris Heinz still have CH300 plans available or is it a classic shell game puzzle?
12/25/2004 @ 05:24 [ref: 8960]
 Chris Horsten
 Brampton, ON
This Zenair CH-300 was bought with only 277 hours on it. After almost 20 years, the canopy is in excellent shape and the airframe also. A hard landing cracked and bent the vertical upright angles in the centre of the firewall, but this was easy to fix using the old metal fitting and new angles. Despite being stored or flown, birds nests were found under the belly pan. Panel is currently being refitted with all electonics and one electric Turn & Bank. This is a nice aircraft with plenty of room and a great useful load. Now if only I can get it to match some of those performance numbers you guys are getting!

06/15/2004 @ 09:36 [ref: 7615]
 Bob Russell
 Winnipeg, MB
I am in the process of finishing off a CH300 that I bought partialy done . Currently am waiting for a canopy and and engine for it . I have had the pleasure of a flight in a CH200 and was impressed by the stability of it. I was lucky enought to get to fly it for a bit. I am anxious to have mine done but am taking my time with it .It is great to see pictures of finished airplanes and hear the good reports of performance and reliability. Bob R
03/29/2004 @ 14:10 [ref: 7092]
 John Bagshaw
 Blind Bay, BC
I fly a CH 250 tail dragger/150 Hp Lyc. from a grass strip, El. 1555'. It has the CH 300 canopy, and cruises about 160 mph. It is a bit smaller/lighter version of the CH 300, so there are likely some differences.
My ASI does not indicates until 40mph, so I have no real idea of stall speed, flaps up or down. In both cases:
a. Stall speed is somehwere below 40 mph;
b. This airframe gives a definate warning judder and "oil can pop" just prior to the stall;
c. Wingdrop is easily controlled by rudder even when the aircraft is held in a fully developed stall; and,
d. Recovery is virtually instant with release of back pressure.
I turn final with full flap, minimum 80 mph, decreasing to min 60 mph when wings level until over the threshhold. That seems to work well for this airframe, even when close to max landing weight. I'll add 10 kts to both in significantly gusty conditions.
I normally take off clean, but will use 1/3 flap on a hot day when close to gross weight.
The aircraft is not as pretty as an RV-4 or 6, but seems to perform about as well. And it is affordable for the average mortal. Great bang for the buck, and a joy to fly.
03/01/2004 @ 21:31 [ref: 6885]
 John Bagshaw
 Blind Bay, BC
I fly a CH 250 tail dragger/150 Hp Lyc. from a grass strip, El. 1555'. It has the CH 300 canopy, and cruises about 160 mph. It is a bit smaller/lighter version of the CH 300, so there are likely some differences.
My ASI does not indicates until 40mph, so I have no real idea of stall speed, flaps up or down. In both cases:
a. Stall speed is somehwere below 40 mph;
b. This airframe gives a definate warning judder and "oil can pop" just prior to the stall;
c. Wingdrop is easily controlled by rudder even when the aircraft is held in a fully developed stall; and,
d. Recovery is virtually instant with release of back pressure.
I turn final with full flap, minimum 80 mph, decreasing to min 60 mph when wings level until over the threshhold. That seems to work well for this airframe, even when close to max landing weight. I'll add 10 kts to both in significantly gusty conditions.
I normally take off clean, but will use 1/3 flap on a hot day when close to gross weight.
The aircraft is not as pretty as an RV-4 or 6, but seems to perform about as well. And it is affordable for the average mortal. Great bang for the buck, and a joy to fly.
03/01/2004 @ 21:31 [ref: 6884]
 Rob Treleaven
 Burlington, ON
Just bought a Tri-Zenith CH300 with 160h.p.Lycoming.
No P.O.H. - any comments/guidance re operations from owners would be appreciated. Great machine from what little flying I have done in it to date. Seems to want about 80-85 mph finals, 90 climbout, and roars along at 140 mph at 2400 rpm. Very stable. Requires little rudder, and power right to the runway on landing.

Comments about flaps settings (seems like much more flaps available than needed - any elevator stall issues at full flaps??) /soft field/ etc. appreciated. My A/C is C-GHVL
11/01/2002 @ 18:17 [ref: 6005]
 Jean Paul Gagnon
 Sault Ste Marie, ON
After building a Tri Zenith from a 45% Zenair kit
i must say that the final product has met and or exceeded
Chris Heintz evaluation.
The aircraft C-FLRX was completed in 1992 and following
its final inspection flown early in 1993.
The aircraft has 550 hour since new, the only problem
encountered with the airframe was cracked upper engine mount
fitting.The later repaired as per zenair reccomendation and
has been trouble free since then.
It will meet the 140 mph advertised speed at 75% power and
8000 ft if one is willing to listen to an engine spinning
at 2800 rpm. I cruise at 60% power and indicate 130mph plus
It is quite comfortable at that speed and setting.
The aircraft is powered by a 150 HP Lycoming.
The best description one can give to this airplane is that it
is an honest airplane.
The Zenair group has been a pleasure to deal with i cannot
speak highly enough about their honesty and integrity.
Jean Paul Gagnon
09/19/2001 @ 09:28 [ref: 3216]

 

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